Kuyang'ana musanayambe kukhazikitsa vavu

① Yang'anani mosamala ngati mawonekedwe a valve ndi mafotokozedwe akukwaniritsa zofunikira zojambula.

② Onani ngati tsinde la valve ndi diski ya valve imasinthasintha potsegula, komanso ngati yamamatira kapena yokhota.

③ Onani ngati valavu yawonongeka komanso ngati ulusi wa valavu yowongoka ndi yowongoka komanso yosasunthika.

④ Onani ngati kugwirizana pakati pa mpando wa valve ndi thupi la valve kuli kolimba, kugwirizana pakati pa diski ya valve ndi mpando wa valve, chivundikiro cha valve ndi thupi la valve, ndi tsinde la valve ndi disc valve.

⑤ Yang'anani ngati ma valve gasket, kulongedza ndi zomangira (maboliti) ndi oyenera kutengera mtundu wa sing'anga yogwirira ntchito.

⑥ Ma valve ochepetsa kupanikizika omwe ali akale kapena osiyidwa kwa nthawi yayitali ayenera kuchotsedwa, ndipo fumbi, mchenga ndi zinyalala zina ziyenera kutsukidwa ndi madzi.

⑦ Chotsani chivundikiro chosindikizira doko ndikuwona digiri yosindikiza. Disiki ya valve iyenera kutsekedwa mwamphamvu.

Kuyesa kwa ma valve

Ma valve otsika, apakati-pakatikati komanso othamanga kwambiri ayenera kuyezetsa mphamvu ndi zolimba. Mavavu azitsulo a alloy amayeneranso kusanthula zipolopolo chimodzi ndi chimodzi ndikuwunikanso zida.

1. Mayeso a mphamvu ya vavu

Kuyesa kwamphamvu kwa valve ndikuyesa valavu pamalo otseguka kuti muwone kutuluka kunja kwa valavu. Kwa ma valve omwe ali ndi PN ≤ 32MPa, kupanikizika kwa mayesero ndi 1.5 nthawi zomwe zimapangidwira, nthawi yoyesera siichepera mphindi 5, ndipo palibe kutayikira pa chipolopolo ndi kunyamula gland kuti akhale woyenera.

2. Mayeso olimba a valve

Kuyesedwa kumachitika ndi valavu yotsekedwa kwathunthu kuti muwone ngati pali kutayikira pamtunda wosindikiza ma valve. Kuthamanga kwa mayeso, kupatula ma valve a butterfly, ma valve owunika, ma valve apansi ndi ma throttle valves, ayenera kuchitidwa mwadzina. Zikadziwika Pakukakamiza kugwira ntchito, kuyezetsako kungathenso kuchitidwa pa 1.25 nthawi yogwira ntchito, ndipo malo osindikizira a disc valve adzakhala oyenerera ngati sakudumphira.

General malamulo kukhazikitsa vavu

1. Kuyika kwa valve sikuyenera kulepheretsa ntchito, kusokoneza ndi kukonza zipangizo, mapaipi ndi thupi la valve palokha, komanso maonekedwe okongola a msonkhano ayenera kuganiziridwa.

2. Kwa ma valve pa mapaipi opingasa, tsinde la valve liyenera kuikidwa mmwamba kapena kuikidwa pa ngodya. Osayika valavu ndi gudumu lamanja pansi. Ma valve, ma valve amayambira ndi magudumu am'manja pamapaipi okwera kwambiri amatha kuyikidwa molunjika, ndipo unyolo woyima pamtunda wocheperako ungagwiritsidwe ntchito kuwongolera patali kutsegula ndi kutseka kwa valve.

3. Kapangidwe kake ndi kofanana, kowoneka bwino komanso kokongola; kwa ma valve pa standpipe, ngati njirayo ilola, gudumu la valavu ndiloyenera kuyendetsedwa pamtunda wa chifuwa, nthawi zambiri 1.0-1.2m kuchokera pansi, ndipo tsinde la valve liyenera kutsatira kuyika kwa woyendetsa.

4. Kwa ma valve pamapaipi oima kumbali ndi mbali, ndi bwino kukhala ndi mzere wapakati womwewo, ndipo mtunda woonekera pakati pa magudumu a m'manja sikuyenera kukhala osachepera 100mm; kwa mavavu pamapaipi opingasa mbali ndi mbali, ayenera kugwedezeka kuti achepetse mtunda pakati pa mapaipi.

5. Mukayika ma valve olemera kwambiri pa mapampu a madzi, osinthanitsa kutentha ndi zipangizo zina, mabatani a valve ayenera kuikidwa; pamene ma valve amagwiritsidwa ntchito mobwerezabwereza ndikuyika kupitirira 1.8m kutali ndi malo ogwiritsira ntchito, malo opangira opaleshoni ayenera kuikidwa.

6. Ngati pali chizindikiro cha muvi pa thupi la valavu, mayendedwe a muvi ndi njira yothamanga ya sing'anga. Mukayika valavu, onetsetsani kuti muviwo ukulozera mbali imodzi ndikuyenda kwa sing'anga mu chitoliro.

7. Mukayika ma valve a flange, onetsetsani kuti mapeto a ma flanges awiriwa ndi ofanana komanso osakanikirana, ndipo ma gaskets awiri saloledwa.

8. Mukayika valavu ya ulusi, kuti muthe kusokoneza, valavu ya ulusi iyenera kukhala ndi mgwirizano. Makhazikitsidwe a mgwirizanowo ayenera kuganizira za kusamalidwa bwino. Kawirikawiri, madzi amayenda kudzera mu valve poyamba ndiyeno kupyolera mu mgwirizano.

Njira zodzitetezera kuyika ma valve

1. Zida za thupi la valve nthawi zambiri zimakhala zitsulo zotayidwa, zomwe zimakhala zowonongeka ndipo siziyenera kugunda ndi zinthu zolemera.

2. Ponyamula valavu, musataye mwachisawawa; pokweza kapena kukweza valavu, chingwe chiyenera kumangirizidwa ku thupi la valve, ndipo ndizoletsedwa kumangiriza pa handwheel, valve stem ndi flange bolt bolt.

3. Valve iyenera kuikidwa pamalo abwino kwambiri kuti agwire ntchito, kukonza ndi kuyang'anitsitsa, ndipo ndizoletsedwa kuti azikwirira mobisa. Mavavu pamapaipi omwe amakwiriridwa mwachindunji kapena m'ngalande ayenera kukhala ndi zitsime zoyang'anira kuti athe kutsegula, kutseka ndi kusintha kwa ma valve.

4. Onetsetsani kuti ulusiwo ndi wosasunthika komanso wokutidwa ndi hemp, mafuta otsogolera kapena tepi ya PTFE